Question

5. The boys have got already. A. two bread B. two breads C. two pieces of bread

D. two piece of bread
6. The old man wants .

A. six boxes of apples B. six boxes of apple

C. six box of apples D. six boxs of apples

7. There some in the river.

A. is ,fish B. are, fishs C. is, fishs D. are ,fish

8. There two in the box.

A. is watch B. are watches C. are watch D. is watches

Answer 1

5.C bread不可数名词，要用piece这个量词来修饰，数量多于一时，量词要变复数
6.A apple可数，本身变复数就要加s,这个是将一盒作为一个单位，超过一盒所以box要变复数，而超过一盒的苹果肯定就不止一个，apple当然也要加s
7.D fish作为鱼肉不可数，谓语要用单数is, 作为鱼的条数，是可数的，但是复数也是fish，谓语要用are, 用作鱼的种类可数，复数是fishes,此时谓语用are,标准答案只有D
8.B很简单，watch是可数名词手表的意思，复数watches, 谓语用复数are

Answer 2

5.C
6.D
7.A
8.B

Answer 3

5、C 6、A 7、D 8、B